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TC2574-VPA 데이터시트(PDF) 2 Page - TelCom Semiconductor, Inc |
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TC2574-VPA 데이터시트(HTML) 2 Page - TelCom Semiconductor, Inc |
2 / 25 page TC2574 2 TC2574-1 1/6/00 0.5A Step-Down Switching Regulator ABSOLUTE MAXIMUM RATINGS* Maximum Supply Voltage ................................ VIN = 45V ON/OFF Pin Input Voltage ..................... –0.3V ≤ V ≤ +VIN Output Voltage to Ground (Steady State) ............... –1.0 V Max Power Dissipation (SOIC) ........... (Internally Limited) Thermal Resistance, Junction-to-Ambient ..... 145 °C/W Max Power Dissipation (PDIP) ............ (Internally Limited) Thermal Resistance, Junction-to-Ambient ... 100 °C/W Thermal Resistance, Junction-to-Case ........ 5.0 °C/W Storage Temperature Range ................. –65 °C to +150°C Minimum ESD Rating .............................................. 2.0kV (Human Body Model: C = 100 pF, R = 1.5 k Ω) Lead Temperature (Soldering, 10 seconds) .......... 260 °C Maximum Junction Temperature ............................. 150 °C Operating Junction Temperature Range .... –40 to +125*C Supply Voltage ............................................................ 40V *This is a stress rating only, and functional operation of the device at these or any other conditions beyond those indicated in the operation section of the specifications is not implied. Exposure to absolute maximum ratings conditions for extended periods of time may affect device reliability. ELECTRICAL CHARACTERISTICS: Unless otherwise specified, VIN = 12V for the 3.3V, 5.0V, and Adjustable version,VIN = 25V for the 12V version. ILOAD = 100mA. For typical values TJ = 25°C, for min/max values TJ is the operating junction temperature range that applies (Note 2), unless otherwise noted. Symbol Parameter Test Conditions Min Typ Max Units TC2574-3.3 [( Note 1) Test Circuit Figure 2] VOUT Output Voltage VIN = 12V, ILOAD = 100mA, TJ = 25°C 3.234 3.3 3.366 V 4.75V ≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5AV TJ = 25°C 3.168 3.3 3.432 TJ = –40°C to +125° 3.135 — 3.465 η Efficiency VIN = 12V, ILOAD = 0.5 A — 72 — % TC2574-5 [( Note 1) Test Circuit Figure 2] VOUT Output Voltage VIN = 12V, ILOAD = 100mA, TJ = 25°C 4.9 5.0 5.1 V 7.0V ≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A TJ = 25°C 4.8 5.0 5.2 TJ = –40°C to +125°C 4.75 — 5.25 η Efficiency VIN = 12V, ILOAD = 0.5 A — 77 — % TC2574-12 [( Note 1) Test Circuit Figure 2] VOUT Output Voltage VIN = 25V, ILOAD = 100mA, TJ = 25°C 11.76 10 12.24 V 15V ≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A TJ = 25°C 11.52 12 12.48 TJ = –40°C to +125°C 11.4 — 12.6 η Efficiency VIN = 15V, ILOAD = 0.5 A — 88 — % TC2574-Adjustable Version [( Note 1) Test Circuit Figure 2] VFB Feedback Voltage VIN = 12V, ILOAD = 100mA, VOUT = 5.0V, 1.217 1.23 1.243 V TJ = 25*C VFBT Feedback Voltage 7.0V ≤ VIN ≤ 40V, 0.1A ≤ ILOAD ≤ 0.5A VOUT = 5.0V TJ = 25°C 1.193 1.23 1.267 TJ = –40°C to +125°C 1.18 — 1.28 η Efficiency VIN = 12V, ILOAD = 0.5A, VOUT = 5.0V — 77 — % NOTES: 1. External components such as the catch diode, inductor, input and output capacitors can affect the switching regulator system performance. When the TC2574 is used as shown in the Figure 2 test circuit, the system performance will be as shown in the system parameters section of the Electrical Characteristics. 2. Tested junction temperature range for the TC2574: TLOW = –40°C THIGH = +125°C |
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